package com.xu.sso.client.utils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CookiesUtil {

    // 保存路径,根路径
    private static final String COOKIE_PATH = "/";

    public static void set(HttpServletResponse response, String key, String value) {
        set(response, key, value, -1);
    }

    public static void set(HttpServletResponse response, String key, String value, Integer expiration) {
        set(response, key, value, expiration == null ? -1 : expiration);
    }

    public static String getValue(HttpServletRequest request, String key) {
        Cookie cookie = get(request, key);
        if (cookie != null) {
            return cookie.getValue();
        }
        return null;
    }

    public static void remove(HttpServletRequest request, HttpServletResponse response, String key) {
        Cookie cookie = get(request, key);
        if (cookie != null) {
            set(response, key, "", 0);
        }
    }

    public static void set(HttpServletResponse response, String key, String value, int maxAge) {
        Cookie cookie = new Cookie(key, value);
        cookie.setPath(COOKIE_PATH);
        cookie.setMaxAge(maxAge);
        cookie.setHttpOnly(true);
        response.addCookie(cookie);
    }

    private static Cookie get(HttpServletRequest request, String key) {
        Cookie[] arr_cookie = request.getCookies();
        if (arr_cookie != null && arr_cookie.length > 0) {
            for (Cookie cookie : arr_cookie) {
                if (cookie.getName().equals(key)) {
                    return cookie;
                }
            }
        }
        return null;
    }

}
